Marcus returns to the New England coast with his family when his depraved behaviour spirals out of control. Marcus is unable to find solace as he is plagued by his deepest thoughts and fears. Are his thoughts fading? He is waiting for the right climate. Michael, his brother who is in a falling marriage, leaves Spencer and Lily to him. Grace, his wife, follows. His sanity is in decline and he must protect Lily from the monster who lies in wait.